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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Iridaceae||View Description||Dichotomous Key|
|Genus: Iris||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Iris missouriensis Nutt.
Habit: Rhizome 20--30 mm diam. Stem: rarely branched, 20--50 cm. Leaf: basal 3--9 mm wide, base +- purple or not; cauline 1--2, bract-like for at least 2/3 stem length. Inflorescence: flowers 1--2; lowest 2 bracts opposite, generally scarious, enclosing perianth tube, outer 4--8 cm, 5--7 mm wide. Flower: perianth pale lilac to +- white, veined lilac-purple, tube 4--12 mm, funnel-shaped; sepals 4--7 cm, 18--22 mm wide, obovate; petals 4--6 cm, 9--12 mm wide, widely oblanceolate; ovary triangular, style branches 25--35 mm, crests 7--10 mm, stigmas 2-lobed. Chromosomes: 2n=38.
Ecology: Vernally moist grassy or rocky areas; Elevation: 900--3400 m. Bioregional Distribution: KR, NCoR, SN, SCoRI, TR, PR, GB; Distribution Outside California: western North America, northern Mexico. Flowering Time: May--Jul Note: Increases in grazed pastures because leaves unpalatably bitter.
Synonyms: Iris montana Nutt. ex Dykes
Unabridged Note: Coastal populations sometimes included in this sp., here treated as Iris longipetala.
eFlora Treatment Author: Carol A. Wilson
Jepson Online Interchange
Previous taxon: Iris macrosiphon
Next taxon: Iris munzii
Citation for this treatment: Carol A. Wilson 2016. Iris missouriensis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=29292, accessed on May 03, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 03, 2016.